Note 12 - Financing Agreements - Debt Instrument Redemption (Details)	6 Months Ended
	Jun. 30, 2022 Rate
Senior Notes due April 15, 2025 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Redemption Price, Percentage	101.438%
Senior Notes due April 15, 2025 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due April 15, 2025 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due November 15, 2027 [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due November 15, 2027 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Redemption Price, Percentage	102.688%
Senior Notes due November 15, 2027 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Redemption Price, Percentage	101.344%
Senior Notes due November 15, 2027 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due November 15, 2027 [Member] | Debt Instrument, Redemption, Period Four [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due November 15, 2027 [Member] | Debt Instrument, Redemption, Period Five [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due June 15, 2028 [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due June 15, 2028 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Redemption Price, Percentage	102.813%
Senior Notes due June 15, 2028 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Redemption Price, Percentage	101.406%
Senior Notes due June 15, 2028 [Member] | Debt Instrument, Redemption, Period Four [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due June 15, 2028 [Member] | Debt Instrument, Redemption, Period Five [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due June 15, 2028 [Member] | Debt Instrument, Redemption, Period Six [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes Due July 15, 2029 [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes Due July 15, 2029 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Redemption Price, Percentage	101.50%
Senior Notes Due July 15, 2029 [Member] | Debt Instrument, Redemption, Period Four [Member]
Debt Instrument, Redemption Price, Percentage	100.75%
Senior Notes Due July 15, 2029 [Member] | Debt Instrument, Redemption, Period Five [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes Due July 15, 2029 [Member] | Debt Instrument, Redemption, Period Six [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes Due July 15, 2029 [Member] | Debt Instrument, Redemption, Period Seven [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes DueSeptember 1, 2030 [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes DueSeptember 1, 2030 [Member] | Debt Instrument, Redemption, Period Five [Member]
Debt Instrument, Redemption Price, Percentage	102.125%
Senior Notes DueSeptember 1, 2030 [Member] | Debt Instrument, Redemption, Period Six [Member]
Debt Instrument, Redemption Price, Percentage	101.417%
Senior Notes DueSeptember 1, 2030 [Member] | Debt Instrument, Redemption, Period Seven [Member]
Debt Instrument, Redemption Price, Percentage	100.708%
Senior Notes DueSeptember 1, 2030 [Member] | Debt Instrument, Redemption, Period Eight [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due February 15, 2032 [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due February 15, 2032 [Member] | Debt Instrument, Redemption, Period Six [Member]
Debt Instrument, Redemption Price, Percentage	102.25%
Senior Notes due February 15, 2032 [Member] | Debt Instrument, Redemption, Period Seven [Member]
Debt Instrument, Redemption Price, Percentage	101.50%
Senior Notes due February 15, 2032 [Member] | Debt Instrument, Redemption, Period Eight [Member]
Debt Instrument, Redemption Price, Percentage	100.75%
Senior Notes due February 15, 2032 [Member] | Debt Instrument, Redemption, Period Nine [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes due February 15, 2032 [Member] | Debt Instrument, Redemption, Period Ten [Member]
Debt Instrument, Redemption Price, Percentage	100.00%